The winding up of solvent-free composite film must be neat, otherwise tunnel phenomenon will easily appear at the edge of winding loose. For example, when the winding tension taper of small paper core is set as 10% (150 mm) / 15% (300 mm) / 20% (450 mm), the winding of composite surface layer can be neat, and the phenomenon of uneven winding occurs when the inner layer is compounded; when the winding tension taper is set as 10% (200 mm) / 30% (350 mm) / 40% (550 mm), the winding is basically neat.
If the winding tension taper is set too small, the outer layer will produce a larger extrusion force on the inner layer. If the friction force between the inner and outer layers is smaller after the winding of the composite film (the film is too smooth, the friction force is small), the winding extrusion phenomenon will occur. When a larger winding tension taper is set, the winding can be neat again. This shows that the winding uniformity of the solvent-free composite film is related to the setting of tension parameters and the friction force between the composite films.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.